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研究了悬浮处理对铸造热锻模具钢（ＪＣＤ钢）的显微组织和力学性能的影响。结果表明，悬浮处理后的铸造热锻模具钢，结晶组织得到细化，偏析倾向减小，铸件硬度从ＨＲＣ３９５提高到４４１５，冲击韧性从２０２６Ｊ／ｃｍ２提高到５４８２Ｊ／ｃｍ２，抗热疲劳性提高了约一倍，断面力学性能的均匀性和耐磨性均有较大幅度的提高，可满足热锻模具使用性能的要求。
The effect of suspension treatment on the microstructure and mechanical properties of cast hot-forged die steel (JCD steel) was investigated. The results show that the microstructure of the hot-forged die steel after the suspension treatment is refined and the segregation tendency is reduced. The hardness of the castings increases from HR39.5 to 44.15 and the impact toughness increases from 20.26J / cm2 to 54.82J / cm2, thermal fatigue resistance increased by about double the mechanical properties of cross-section uniformity and wear resistance have more substantial increase, to meet the performance requirements of hot forging die.